Trading the double inside bar pattern is really straight forward. You are anticipating a breakout either up or down so all you have to do is to place two pending stop orders above the high/low of the FIRST inside bar:

place a sell stop pending order 2-3 pips under the low of first inside bar. And also place a buy stop pending order 2-3 pips above the high of the first inside bar.

Your stop loss for a sell stop order should be placed at least 3-5 pips above the high of the first inside bar. Similarly, your stop loss for a buy stop pending order should be placed at least 3-5 pips below the low of the first inside bar.

Set your take profit targets as 3 times what you risked or look for previous swing highs/lows and use them as your take profit target levels.